Aryl methyl ketones can be easily converted to 1‐aryl‐2‐dimethylaminomethylpropenones that are known as interesting lead structures for drug development. By reaction of these enone Mannichbases with benzamidines, a series of new 2‐aryl‐5‐aroyl‐3,4,5,6‐tetrahydopyrimidines were synthesized. These structures were characterized according to their lipophilicity. Thirty five tetrahydropyrimidines were